<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
      <!--警告区域-->
      <el-alert title="注意：只允许为第三级分类设置相关参数" type="warning" :closable="false" show-icon></el-alert>
      <!--选择商品分类区域-->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>
          <!--选择商品分类级联选择框-->
          <el-cascader
            v-model="selectedCateKeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>
      <!--tab页签区域-->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <!--添加动态参数面板-->
        <el-tab-pane label="动态参数" name="many">
          <!--添加参数的按钮-->
          <el-button
            type="primary"
            size="mini"
            :disabled="isButtonDisabled"
            @click="addDialogVisible = true"
          >添加参数</el-button>
          <!--动态参数数据列表-->
          <el-table :data="manyTableData" stripe border>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item,i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close="manyTagClose(i,scope.row)"
                >{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column prop="attr_name" label="参数名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="editHandle(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  size="mini"
                  type="danger"
                  icon="el-icon-delete"
                  @click="delHandle(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <!--添加静态属性面板-->
        <el-tab-pane label="静态参数" name="only">
          <!--添加属性的按钮-->
          <el-button
            type="primary"
            size="mini"
            :disabled="isButtonDisabled"
            @click="addDialogVisible = true"
          >添加属性</el-button>
          <!--静态属性参数数据列表-->
          <el-table :data="onlyTableData" stripe border>
            <!-- <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable>{{item}}</el-tag>
              </template>
            </el-table-column> -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item,i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close="manyTagClose(i,scope.row)"
                >{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column prop="attr_name" label="属性名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="editHandle(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  size="mini"
                  type="danger"
                  icon="el-icon-delete"
                  @click="delHandle(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
      <!--添加按钮对话框-->
      <el-dialog
        :title="'添加'+this.titleText"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <!--表单区域-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
          <el-form-item :label="this.titleText" prop="attr_name">
            <el-input v-model="addForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addParams">确 定</el-button>
        </span>
      </el-dialog>
      <!--修改按钮对话框-->
      <el-dialog
        :title="'修改'+this.titleText"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <!--表单区域-->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
          <el-form-item :label="this.titleText" prop="attr_name">
            <el-input v-model="editForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editParams">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    return {
      catelist: [],
      selectedCateKeys: [],
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      activeName: 'many',
      onlyTableData: [],
      manyTableData: [],
      addDialogVisible: false,
      addForm: {
        attr_name: ''
      },
      addFormRules: {
        attr_name: [
          { required: true, message: '请输入参数名称', trigger: 'blur' }
        ]
      },
      //控制修改对话框的标志位
      editDialogVisible: false,
      //修改表单对应的数据
      editForm: {
        attr_name: ''
      },
      //修改表单对应的校验规则
      editFormRules: {
        attr_name: [
          { required: true, message: '请输入参数名称', trigger: 'blur' }
        ]
      },
      inputVisible: false,
      inputValue: ''
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据列表失败!')
      }
      this.catelist = res.data
      console.log(this.catelist)
    },
    handleChange() {
      this.getCategoryList()
    },
    handleTabClick() {
      console.log(this.activeName)
      this.getCategoryList()
    },
    async getCategoryList() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        this.onlyTableData = []
        this.manyTableData = []
        return
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName }
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类参数列表失败!')
      }
      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        item.inputVisible = false
        item.inputValue = ''
      })
      if (this.activeName == 'only') {
        this.onlyTableData = res.data
      } else {
        this.manyTableData = res.data
      }
      console.log(res.data)
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    addParams() {
      this.$refs.addFormRef.validate(async validFlag => {
        if (!validFlag) {
          return
        }
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName
          }
        )
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败!')
        }
        this.$message.success('添加参数成功!')
        this.addDialogVisible = false
        this.getCategoryList()
      })
    },
    async editHandle(attr_id) {
      //查询修改弹框对应的回显的数据
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        {
          params: {
            attr_sel: this.activeName
          }
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('查询参数失败!')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //关闭修改对话框对应的方法
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改表单对应的确定按钮
    editParams() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          {
            attr_name: this.editForm.attr_name,
            attr_sel: this.activeName
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新参数失败!')
        }
        this.$message.success('更新参数成功!')
        this.getCategoryList()
        this.editDialogVisible = false
      })
    },
    //删除按钮
    delHandle(attr_id) {
      this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(async () => {
          const { data: res } = await this.$http.delete(
            `categories/${this.cateId}/attributes/${attr_id}`
          )
          if (res.meta.status !== 200) {
            return this.$message({
              type: 'error',
              message: '删除参数失败!'
            })
          }
          this.$message({
            type: 'success',
            message: '删除参数成功!'
          })
          this.getCategoryList()
        })
        .catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
    },
    showInput(row) {
      row.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleInputConfirm(row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      //如果没有return,则证明输入的内容，需要做后续的处理
      row.attr_vals.push(row.inputValue.trim())
      row.inputVisible = false
      row.inputValue = ''
      this.saveAttrVals(row)
      // const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
      //   attr_name:row.attr_name,
      //   attr_sel:row.attr_sel,
      //   attr_vals:row.attr_vals.join(" ")
      // })
      // if(res.meta.status != 200){
      //   return this.$message.error("修改参数项失败!");
      // }
      // this.$message.success("修改参数项成功!");
    },
    async saveAttrVals(row) {
      const { data: res } = await this.$http.put(
        `categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: row.attr_sel,
          attr_vals: row.attr_vals.join(' ')
        }
      )
      if (res.meta.status != 200) {
        return this.$message.error('修改参数项失败!')
      }
      this.$message.success('修改参数项成功!')
    },
    manyTagClose(i, row) {
      row.attr_vals.splice(i, 1)
      this.saveAttrVals(row)
    }
  },
  computed: {
    isButtonDisabled() {
      if (this.selectedCateKeys.length === 3) {
        return false
      } else {
        return true
      }
    },
    cateId() {
      if (this.selectedCateKeys.length == 3) {
        return this.selectedCateKeys[2]
      } else {
        return null
      }
    },
    titleText() {
      if (this.activeName == 'only') {
        return '静态属性'
      } else {
        return '动态参数'
      }
    }
  }
}
</script>
<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.el-tag {
  margin: 10px;
}
.input-new-tag {
  width: 120px;
}
</style>